The right answer is D (less responsive to antigens)
It is proven that, after puberty, thymus activity (an organ that is included in the lymphatic system, producing T cells that pick up antigens) decreases and that in adult and aged people the thymus has no role. Work done in humans indicate that in fact the cellularity begins to decline from birth in favor of lymphocyte perivascular spaces and connective and adipose tissue, which leads to a decrease in the capture of antigens.
Answer:
Meiosis!
Explanation:
Meiosis results in 4 haploid daughter cells.
Answer:
Guillain-Barre syndrome.
Explanation:
Guillain-Barre syndrome may be defined as the a rare disorder in which the nerves of an individual are attacked by the body's immune system. The symptoms include tingling, weakness and paralysis.
The spinal nerves gets progressively reduced causes the muscle weakness. The individual get attacked by the paralysis in a 24 to 72 hours of the period. The peripheral nervous system of the body gets damaged in this disease.
Thus, the answer is Guillain-Barre syndrome.
Given what we know, we can confirm that the fact that Mannitol salt agar can determine which species of Staphylococcus is present makes it an example of a selective differential medium.
<h3>What is a selective differential medium?</h3>
- This type of medium is very similar to that of a differential medium in that it also allows more than one type of microbe to grow.
- It also allows the user to continue to distinguish between the microbe colonies based on biochemical differences.
- However, in contrast to that of a basic differential medium, this differential medium is also selective in that it controls which type of microbe specifically is allowed to grow.
Therefore, we can confirm that since Mannitol salt agar can determine which species of Staphylococcus is present, it can be considered a differential selective medium because it allows multiple microbes to grow while controlling which types are allowed to grow.
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